In fact, due to our lack of knowledge, many times we cannot participate in discussions . It appears to be discussing a topic I don't know much about . I think one should go there and just read a bit and gain knowledge but not participate in the discussions . If the conversation is about something I know about, or if I don't know, I want to know, then it's possible to join the conversation .
Perfect, its was well said, not everything you see you rush into, we cannot know everything or be everywhere, we must only maintain where we think we can deliver the best expected of us, that is why if you think you have less idea on a thread, read and learn more about such and you don't have to comment, there are more many other ones awaiting your quality contributions if you know about the subject matter.